California State Polytechnic University, Pomona
Degree Curriculum Sheet
MECHANICAL ENGINEERING
Plan (Major) _
Subplan/Option _
Required Core Courses
Course
Units
Students in this major are expected to maintain a GPA of at least
2.00 in all core courses.
M
Chapter 21
Problem 21.7
Solution. With rightward positive, the net force on q3 is
We note that each term exhibits the proper sign (positive for rightward, negative for
leftward) for all possible signs of the charges. For example, the first term (the force
Chapter 22
Problem 22.7
Solution. The x component of the electric field at the center of the square is given by
Similarly, the y component of the electric field is
Thus, the electric field at the center of the square is
The net
electric field is depicted
Chapter 23
Problem 23.5
Solution. To exploit the symmetry of the situation, we imagine a closed Gaussian surface
in the shape of a cube, of edge length d, with a proton of charge
situated at the inside center of the cube. The cube has six faces, and we ex